Thank you for viewing. [Brand New, Unused] Product Specifications: Product Name: Glass Tube Fuse; Melting Speed: Fast (F); Material: Glass, Metal; Color: Transparent; Rated Voltage: 250V; Breaking Current: 4A; Diameter: 6mm; Total Length: 30mm Features: Widely used as the simplest and most inexpensive way to protect machines when overcurrent or short-circuit current flows. Unique formulations ensure consistent welding characteristics. Surge-resistant reflow and flow soldering compatible. Easy to Use: The amperage is displayed on the base. Overcurrent flows into the solution, generating heat and melting at a higher temperature, protecting the circuit. The glass tube allows you to clearly see the condition inside the fuse. [Time Lag] Designed to protect equipment that generates instantaneous overcurrent, such as large inrush currents from motors, and will not blow due to the instantaneous overcurrent of inrush current. It can exceed the rated fuse value for a short period of time. [Applications] Reliable and cost-effective, these devices are ideal for circuit protection in many applications, such as home appliances and electrical equipment. Can be used to protect electronic devices, electronics, components, and light vehicles.